20167285 has 8 divisors (see below), whose sum is σ = 24791256. Its totient is φ = 15740160.

The previous prime is 20167283. The next prime is 20167291. The reversal of 20167285 is 58276102.

It can be written as a sum of positive squares in 4 ways, for example, as 78961 + 20088324 = 281^2 + 4482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20167285 - 2¹ = 20167283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20167283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48984 + ... + 49393.

It is an arithmetic number, because the mean of its divisors is an integer number (3098907).

Almost surely, 2^20167285 is an apocalyptic number.

It is an amenable number.

20167285 is a deficient number, since it is larger than the sum of its proper divisors (4623971).

20167285 is an equidigital number, since it uses as much as digits as its factorization.

20167285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98423.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 20167285 is about 4490.8000400819. The cubic root of 20167285 is about 272.1964636339.

The spelling of 20167285 in words is "twenty million, one hundred sixty-seven thousand, two hundred eighty-five".